5 Business combinations (Details 3) - Instituto De Pesquisa E Ensino Medico Do Estado De Minas Gerais Ltda. ("IPEMED") [Member]	May 09, 2019
Trademark [Member]
Disclosure of detailed information about business combination [line items]
Valuation technique	Relief-from-royalty - This methodology is based on the market remuneration of the use license granted to third parties. The value of the asset is restated by the savings of royalties that the owner would have to own the asset. And it is necessary to determine a royalty rate that reflects the appropriate remuneration of the asset. The royalty payments, net of taxes, are discounted to present value.
Customer Relationships [Member]
Disclosure of detailed information about business combination [line items]
Valuation technique	Multi-period excess earning method - The method considers the present value of net cash flows expected to be generated by customer relationship, by excluding any cash flows related to contributory assets.

The description of the valuation techniques and significant inputs used to measure non-controlling interest in an acquiree measured at fair value for business combinations in which the acquirer holds less than 100 per cent of the equity interests in the acquiree at the acquisition date. [Refer: At fair value [member]; Business combinations [member]; Valuation techniques [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2019-01-01
-Paragraph B64
-Subparagraph o
-Clause ii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_o_ii&doctype=Appendix&subtype=B
-URIDate 2019-03-27

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration